Social media is full of brief reels of tree-trimming accidents, which are offered as humorous fare. Arborists face obvious risks from falls and power tools, but I had not appreciated the fact that improperly pruning a palm tree can be lethal to the worker. In this video an arborist explains that if the dead fronds are pruned from underneath, 700 pounds of fronds can collapse onto the body of the worker roped to the tree trunk, resulting in asphyxiation. A related video is here. Via the arborists subreddit.
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